Polysaccharide Is Cellulose Or Derivative Thereof Patents (Class 507/214)
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Publication number: 20130130949Abstract: A cellulose ether having (i) one or more substituents selected from the group consisting of methyl, hydroxyethyl and hydroxypropyl, (ii) one or more hydrophobic substituents, and (iii) one or more cationic, tertiary amino, or anionic substituents, and having a retained dynamic viscosity, % ?80/25, of at least 30 percent, wherein % ?80/25=[dynamic solution viscosity at 80° C./dynamic solution viscosity at 25° C.]×100, the dynamic solution viscosity at 25° C. and 80° being measured as 1% aqueous solution, is useful for modifying the viscosity of a composition selected from the group consisting of wellbore servicing fluids, cementitious formulations, ceramics, metal working fluids and cutting fluids.Type: ApplicationFiled: August 10, 2011Publication date: May 23, 2013Applicant: UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY LLCInventors: Emmett M. Partain, III, Russell L. Kreeger
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Patent number: 8420576Abstract: Methods comprising introducing a hydrophobically and cationically modified relative permeability modifier into a portion of a subterranean formation. The hydrophobically and cationically modified relative permeability modifier comprises a hydrophilic polymer backbone with a hydrophobic modification and a cationic modification. The cationic modification may comprise at least one cationic compound comprising an alkyl chain length of from 1 to 3 carbons.Type: GrantFiled: August 10, 2009Date of Patent: April 16, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Larry S. Eoff, B. Raghava Reddy, Eldon D. Dalrymple
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Publication number: 20130081816Abstract: The present disclosure is directed to a thermothickening composition comprising: a surfactant; and a thermothickening polymer that is the product of at least the following monomers: a non-ionic hydrosoluble unsaturated amide monomer; an ionic monomer; and an unsaturated dicarboxylic acid half ester having a heat sensitive functional group.Type: ApplicationFiled: November 20, 2012Publication date: April 4, 2013Applicant: BAKER HUGHES INCORPORATEDInventor: Baker Hughes Incorporated
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Patent number: 8377855Abstract: Methods and compositions for breaking treatment fluids utilized in the stimulation of a subterranean formation.Type: GrantFiled: January 12, 2007Date of Patent: February 19, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Keith A. Frost, Bradley L. Todd, Richard W. Pauls, Ian Robb
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Patent number: 8372789Abstract: Methods that comprise selecting proppant for use in a fracturing fluid based on one or more factors, wherein the one or more factors comprise an interaction between the proppant and the fracturing fluid. Methods that comprise designing a treatment fluid that comprises a gelled base fluid and a particulate based on one or more factors, wherein the one or more factors comprise an interaction between the particulate and the gelled base fluid.Type: GrantFiled: January 16, 2009Date of Patent: February 12, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Phillip C. Harris, Stanley J. Heath, Harold G. Walters
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Publication number: 20130035263Abstract: An agent for oilfield applications capable of being dispersed in water is nanofibrillar cellulose. The nanofibrillar cellulose mixed in water gives shear-thinning behavior to the composition, which is pumped to a subterranean oil-containing formation to aid in oil recovery.Type: ApplicationFiled: January 25, 2011Publication date: February 7, 2013Applicant: UPM-KYMMENE CORPORATIONInventors: Antti Laukkanen, Jan-Erik Teirfolk, Juha Salmela, Martina Lille
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Patent number: 8343896Abstract: Methods are provided comprising providing a sealant composition comprising an aqueous fluid, a diutan composition, at least one gel system, and a leak off prevention material; introducing the sealant composition into a well bore penetrating the subterranean formation; and allowing the sealant composition to form a seal.Type: GrantFiled: September 30, 2009Date of Patent: January 1, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Larry S. Eoff, Richard W. Pauls
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Publication number: 20120289436Abstract: A method of controlling or arresting the rate of depolymerization of a polymer composition during a biocide treatment, and use of such methods in oilfield and industrial applications. Also disclosed are methods of preparing a visco-stable application fluid containing a biocide in an amount effective to reduce bacteria count, as well as additive compositions capable of reducing bacteria count in application fluids while maintaining viscosity in such fluids. Also disclosed are methods of preparing biocide-containing application fluids with improved friction reducing properties, as well as related compositions.Type: ApplicationFiled: May 9, 2012Publication date: November 15, 2012Applicant: RHODIA OPERATIONSInventors: Gary WOODWARD, Subramanian KESAVAN, Adedamola ADEDEJI, Timothy CURTIS
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Publication number: 20120283152Abstract: A well treatment composition comprises: an aqueous liquid; a fluid loss additive, wherein the fluid loss additive comprises a high molecular weight, water-swellable polymer; and an amphiphilic dispersant, wherein the well treatment composition has an activity of at least 10%. A method of cementing in a subterranean formation comprises: introducing a cement composition into the subterranean formation, the cement composition comprising: (i) cement; (ii) water; and (iii) the well treatment composition; and allowing the cement composition to set.Type: ApplicationFiled: July 19, 2012Publication date: November 8, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Abhijit TARAFDAR, Remitha AK, Rahul Chandrakant PATIL, Vikrant WAGLE
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Patent number: 8278250Abstract: Methods of using relative permeability modifiers for the diversion of aqueous fluids during subterranean operations are provided. An embodiment of the present invention provides a method of diverting fluids in a subterranean formation that may comprise providing a treatment fluid comprising an aqueous fluid and a relative permeability modifier that comprises water-soluble polymer with hydrophobic or hydrophilic modification; introducing the treatment fluid into a well bore that penetrates the subterranean formation; and at least a first portion of the treatment fluid to penetrate into a portion of the subterranean formation so as to substantially divert a second portion of the treatment fluid or another aqueous treatment fluid to another portion of the subterranean.Type: GrantFiled: May 5, 2005Date of Patent: October 2, 2012Assignee: Halliburton Energy Services, Inc.Inventors: Eldon D. Dalrymple, Larry S. Eoff, B. Raghava Reddy
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Patent number: 8276664Abstract: Spherical porous and non-porous cellulose particulates for use in sand control as well as stimulation procedures, may be prepared by first dissolving cellulosic materials (such as fibrous cellulose, wood pulp linters, cotton balls and/or paper), in the substantial absence of water or a nitrogen-containing base, in an ionic liquid. The solution is then combined with a cellulose-insoluble liquid to render the spherical particulates. The surface of the cellulosic particulates may be treated with a coating or penetrating layer.Type: GrantFiled: August 13, 2008Date of Patent: October 2, 2012Assignee: Baker Hughes IncorporatedInventor: D. V. Satyanarayana Gupta
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Publication number: 20120245060Abstract: A method of forming a wellbore fluid, the method including introducing a hydratable polymer and introducing a crosslinker comprised of at least a silica material, the crosslinker having a dimension of from about 5 nm to about 100 nm.Type: ApplicationFiled: March 8, 2012Publication date: September 27, 2012Inventors: Li Jiang, Michael D. Parris, Richard D. Hutchins, Javier Sanchez Reyes, Christina D. Martin
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Patent number: 8258085Abstract: The present invention relates to compositions and use of fluidized polymer suspensions containing allyloxy linkage and its functional derivatives, and water soluble polymers for use in oil field applications as fluid additives for drilling and cementing processes.Type: GrantFiled: May 30, 2008Date of Patent: September 4, 2012Assignee: Hercules IncorporatedInventors: Mohand Melbouci, Teng-Shau Young
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Publication number: 20120214712Abstract: A method of servicing a wellbore comprising introducing to the wellbore a wellbore servicing fluid comprising an additive composition comprising a polysaccharide having carboxylate and sulfonate groups. A method of servicing a wellbore comprising preparing at the well site an additive composition comprising a polysaccharide having carboxylate and sulfonate groups, introducing the additive composition into a wellbore servicing fluid, and placing the wellbore servicing fluid into a subterranean formation. A method of preparing a wellbore servicing fluid comprising contacting a polysaccharide composition with an oxidizing agent to form an oxidized polysaccharide, and contacting the oxidized polysaccharide with a sulfonating agent to form a carboxylated sulfonated polysaccharide, and contacting the carboxylated sulfonated polysaccharide with a wellbore servicing fluid.Type: ApplicationFiled: April 30, 2012Publication date: August 23, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: B. Raghava Reddy, Anindya Ghosh, Russell Fitzgerald
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Patent number: 8198220Abstract: The disclosed compositions and methods utilize hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups. The polymers may exhibit physical association in solution at a specific temperature so as to provide a significant increase in viscosity at the specific temperature. The viscosity of such systems is substantially increased by the further inclusion of one or more hydrophilic components that may exhibit physical association in solution at one or more temperature trigger points and also associate with the one or more hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups.Type: GrantFiled: November 3, 2011Date of Patent: June 12, 2012Assignee: BP Corporation North America Inc.Inventors: Philip S. Smith, Dale L. Handlin, Jr.
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Patent number: 8198219Abstract: The use of solid materials based on synthetic polymers and/or biopolymers (A) in natural gas and mineral oil extraction technology. The solid materials are produced by solubilizing at least one synthetic polymer and/or biopolymer (A), or at least one synthetic polymer and/or biopolymer (A) and at least one additive (B), in at least one substantially anhydrous chaotropic liquid (C). The solution or dispersion (AC) or (ABC) is contacted with a liquid (D1) which is miscible with the chaotropic liquid (C), but in which at least the synthetic polymer and/or the biopolymer (A) are substantially insoluble, resulting in a phase (E). The chaotropic liquid (C) is removed from phase (E) to result in a gel (G), which is impregnated with a liquid (D2). The two liquids (D1) and (D2) are removed from the gel (G) by evaporating, producing a solid material based on synthetic polymer and/or biopolymer (A).Type: GrantFiled: February 16, 2009Date of Patent: June 12, 2012Assignee: BASF SEInventors: Simon Champ, Robert Chapman
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Patent number: 8183183Abstract: A method for treating a subterranean formation is made of steps of providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate salt or formic acid; injecting into a wellbore, the composition; contacting the composition with the subterranean formation, wherein the temperature is above 100 degrees Celsius at this contact; and allowing the composition to treat the subterranean formation.Type: GrantFiled: June 23, 2010Date of Patent: May 22, 2012Assignee: Schlumberger Technology CorporationInventors: Leiming Li, Lijun Lin, Curtis L. Boney, Michael D. Parris, Kevin W. England
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Publication number: 20120108472Abstract: A method is disclosed for reducing lost circulation in drilling wells, employing composite materials as lost circulation materials. The composites comprise a thermoplastic polymer and cellulosic fibers. Optionally the composites may include other components such as calcium carbonate, clay, oil and other blending agents.Type: ApplicationFiled: August 11, 2009Publication date: May 3, 2012Inventor: Qinglin Wu
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Control of the properties of cement slurries of normal densities with optimized polymers combination
Patent number: 8124569Abstract: The invention discloses a cement slurry composition for cementing a well comprising: an hydraulic cement, water and a combination made of a cellulosic polymer and an acrylamido-methyl-propane sulfonate co- or ter-polymer, wherein the density of said cement slurry is above 1700 kg/m3.Type: GrantFiled: July 9, 2009Date of Patent: February 28, 2012Assignee: Schlumberger Technology CorporationInventors: Tariq Mehmood Khan, Bernard Piot, Siti Humairah Abd Rahman -
Patent number: 8096360Abstract: Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12.Type: GrantFiled: November 21, 2008Date of Patent: January 17, 2012Assignee: Baker Hughes IncorporatedInventor: Charles David Armstrong
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Publication number: 20120004148Abstract: Treatment of a subterranean formation can be conducted with viscosified treatment fluids that comprise a multifunctional boronic acid crosslinking agent. Methods for treating a subterranean formation can comprise providing a treatment fluid that comprises an aqueous base fluid, a gelling agent, and a multifunctional boronic acid crosslinking agent that comprises a copolymer comprising at least one boronic acid monomer unit and at least one water-soluble monomer unit; and introducing the treatment fluid into a subterranean formation.Type: ApplicationFiled: September 12, 2011Publication date: January 5, 2012Applicant: Halliburton Energy Services, Inc.Inventors: James W. Ogle, Jeremy Holtsclaw, Rajesh K. Saini
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Publication number: 20110319301Abstract: This invention relates to compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using water-in-water polymer emulsions to uniformly dissolve a rheologically active polymer, such as a thickener or friction reducer, in the treatment fluid. The emulsions have a low viscosity and are easily pumped for mixing into a treatment fluid, where upon dilution with an aqueous medium, the polymer is easily hydrated without forming fish-eyes. The partitioning agent in the water-in-water emulsion does not generally affect the rheology of the treatment fluid. The invention also relates to further processing of the emulsion by wet grinding, high shear mixing and/or heating to enhance the hydration rate in the preparation of the well treatment fluid.Type: ApplicationFiled: September 6, 2011Publication date: December 29, 2011Inventors: Philip F. Sullivan, Gary John Tustin, Yenny Christanti, Gregory Kubala, Bruno Drochon, Yiyan Chen, Marie Noelle Dessinges, Paul R. Howard
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Publication number: 20110312857Abstract: Drilling, drill-in and completion fluids containing nanoparticles for use in hydrocarbon drilling and recovery processes and methods related thereto are provided. The fluids also include a dual acting shield agent that shields the nanoparticles and also acts as a viscosifier. The fluids can be used in various types of hydrocarbon drilling and recovery processes, such as drilling, drill in, completion, and the like.Type: ApplicationFiled: June 16, 2010Publication date: December 22, 2011Inventors: Md. Amanullah, Ziad Al-Abdullatif
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Patent number: 8076270Abstract: The disclosed compositions and methods utilize hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups. The polymers may exhibit physical association in solution at a specific temperature so as to provide a significant increase in viscosity at the specific temperature. The viscosity of such systems is substantially increased by the further inclusion of one or more hydrophilic components that may exhibit physical association in solution at one or more temperature trigger points and also associate with the one or more hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups.Type: GrantFiled: September 23, 2009Date of Patent: December 13, 2011Assignee: BP CORPORATION NORTH AMERICA Inc.Inventors: Philip S. Smith, Dale L. Handlin, Jr.
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Publication number: 20110297375Abstract: The invention is a composition, for use in treating oil wells, comprising fibres, hot melt adhesives and particulate solids. This composition has a wide range of applications including preventing or lessening lost circulation, wellbore strengthening or consolidation, controlling fluid loss, producing a “stress cage” effect, gravel packing, acting as an aid to cementing, and for proppant backflow control.Type: ApplicationFiled: August 13, 2009Publication date: December 8, 2011Applicant: Schlumberger Technology CorporationInventors: Nikhil Shindgikar, Jesse Lee
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Patent number: 8071512Abstract: An annular fluid or packer fluid, and methods of making the same, that includes a water-miscible solvent, a viscosifying additive, a crosslinking agent, a crosslinking inhibitor having the facility to inhibit crosslinking between the viscosifying additive and the crosslinking agent, and an initiating agent having the facility to overcome an action of the crosslinking inhibitor and to initiate crosslinking between the viscosifying additive and the crosslinking agent, is shown and described. The fluid has a thermal conductivity of no more than about 0.25 btu/(hr·ft·° F.) and a potential to substantially increase its viscosity upon sitting for a selected period of time.Type: GrantFiled: October 12, 2010Date of Patent: December 6, 2011Assignee: M-I L.L.C.Inventors: Andrew G. K. Jones, Bethicia B. Prasek, Robert L. Horton
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Publication number: 20110278006Abstract: A slurry for treating a wellbore that includes a base fluid; at least one fibrous structure; and a plurality of calcium silicate particles is disclosed. Methods of reducing loss of wellbore fluid in a wellbore to a formation using an LCM pill having calcium silicate particles therein is also disclosed.Type: ApplicationFiled: January 29, 2010Publication date: November 17, 2011Applicant: M-I L.L.C.Inventors: Mark W. Sanders, Jason T. Scorsone, Arvind D. Patel
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Publication number: 20110272142Abstract: The present invention includes methods and compositions relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore includes preparing a sealant composition having a fluid component, a polymeric additive constituent, and a set modifier component. The sealant composition is placed into a wellbore and subjected to ionizing radiation. The ionizing radiation can cause bonding between polymeric additive constituents and create a polymer matrix within the sealant composition that increases the mechanical strength of the sealant composition. The ionizing radiation also alters the set modifier component, triggering the thickening of the sealant composition.Type: ApplicationFiled: March 2, 2011Publication date: November 10, 2011Applicant: Halliburton Law DepartmentInventors: Samuel J. Lewis, Gary Funkhouser, Anthony Badalamenti, Vikram Rao, David F. Myers, Vijay Gupta, James Lynn Davis, Michael Lamvik, Paul Hoertz, Lynn Margaret Soby, Andrew K. Dummer
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Publication number: 20110272141Abstract: The present invention relates to methods useful for isolating a portion of a wellbore. In one embodiment, a method includes preparing a sealant composition containing a set modifier component. The sealant composition is placed into the wellbore and is subjected to ionizing radiation that alters the set modifier component, triggering the thickening of the sealant composition.Type: ApplicationFiled: March 2, 2011Publication date: November 10, 2011Applicant: Halliburton Law DepartmentInventors: Samuel J. Lewis, Anthony Badalamenti, James Lynn Davis, Vijay Gupta, Michele Ostraat, David F. Myers, Michael Lamvik, Andrew K. Dummer, Vikram Rao, Lawrence R. Roberts, Paul Hoertz
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Patent number: 8043999Abstract: This invention relates to compositions and methods of treating a subterranean formation penetrated by a well bore including providing a treatment composition comprising a rheological polymer, a partitioning agent, a charged polyelectrolyte, and a first liquid medium, forming a stabilized heterogeneous mixture comprising a dispersed rheological polymer-rich phase and a partitioning agent-rich phase, and injecting the treatment fluid into the well bore. The invention relates to methods and compositions for preparing a well treatment fluid, including mixing polyethylene glycol partitioning agent, a charged polyelectrolyte, a first aqueous medium, and one or more rheological polymers selected from the group consisting of guar, modified guar, cellulose, modified cellulose, heteropolysaccharide, heteropolysaccharide derivative, or polyacrylamide, to hydrate the one or more polymers and form a water-in-water emulsion, and mixing the water-in-water emulsion with a second aqueous medium to form a well treatment fluid.Type: GrantFiled: January 14, 2009Date of Patent: October 25, 2011Assignee: Schlumberger Technology CorporationInventors: Philip F. Sullivan, Gary John Tustin, Christelle Vatry
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Patent number: 8044000Abstract: This invention relates to compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using water-in-water polymer emulsions to uniformly dissolve a rheologically active polymer, such as a thickener or friction reducer, in the treatment fluid. The emulsions have a low viscosity and are easily pumped for mixing into a treatment fluid, where upon dilution with an aqueous medium, the polymer is easily hydrated without forming fish-eyes. The partitioning agent in the water-in-water emulsion does not generally affect the rheology of the treatment fluid. The invention also relates to further processing of the emulsion by wet grinding, high shear mixing and/or heating to enhance the hydration rate in the preparation of the well treatment fluid.Type: GrantFiled: July 2, 2008Date of Patent: October 25, 2011Assignee: Schlumberger Technology CorporationInventors: Philip F. Sullivan, Gary John Tustin, Yenny Christanti, Gregory Kubala, Bruno Drochon, Yiyan Chen, Marie Noelle Dessinges, Paul R. Howard
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Publication number: 20110240297Abstract: A method comprises providing a treatment fluid comprising an aqueous fluid, and a low-leakoff particulate, contacting a subterranean formation with the treatment fluid, and allowing the low-leakoff particulate to de-link so that at least a portion of the low-leakoff particulate enters the liquid phase.Type: ApplicationFiled: April 6, 2010Publication date: October 6, 2011Inventors: Paul D. Lord, Jimmie D. Weaver, Ivan M. Suleiman
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Patent number: 8008235Abstract: The present invention provides drilling fluids that comprise a base fluid and a water-soluble relative permeability modifier. In addition, the present invention provides methods of reducing the permeability of a subterranean formation to aqueous-based fluids during the drilling phase that comprises providing a water-soluble relative permeability modifier; and placing the water-soluble relative permeability modifier into the subterranean formation during the drilling phase. The present invention provides methods of drilling a well bore in a subterranean formation comprising providing a drilling fluid that comprises a base fluid and a water-soluble relative permeability modifier, and placing the drilling fluid in the subterranean formation. The water-soluble relative permeability modifiers of the present invention generally may comprise hydrophilically modified polymers, hydrophobically modified polymers, or water-soluble polymers without hydrophobic or hydrophilic modification.Type: GrantFiled: March 23, 2004Date of Patent: August 30, 2011Assignee: Halliburton Energy Services, Inc.Inventors: Larry S. Eoff, Eldon D. Dalrymple, B. Raghava Reddy
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Patent number: 7998910Abstract: Treatment fluids for and methods of treating subterranean formations are provided. In certain embodiments, a method is provided comprising providing a treatment fluid comprising a relative permeability modifier, a delayed filter cake breaker, and a carrier fluid, contacting at least a portion of a filter cake in a subterranean formation with the treatment fluid, and removing at least a portion of the filter cake.Type: GrantFiled: February 24, 2009Date of Patent: August 16, 2011Assignee: Halliburton Energy Services, Inc.Inventor: Bradley L. Todd
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Publication number: 20110195875Abstract: An encapsulated reactant(s) having at least one encapsulant and at least one reactant. An outermost encapsulant is substantially nonreacting, impermeable and nondissolving with water. The reactant(s) contribute to at least one reaction with contaminants in environmental media rendering the environmental media less harmless. Processes for using the encapsulated reactant in environmental media is also hereby claimed.Type: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Inventors: Jason Swearingen, Lindsay Swearingen
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Patent number: 7923416Abstract: This invention relates to methods for reducing the viscosity of hydrocarbon liquids encountered in petroleum operations. The method includes forming a low viscosity emulsion by contacting hydrocarbon liquids with an effective amount of a water-soluble polymer having pendant methyl ether groups.Type: GrantFiled: November 6, 2008Date of Patent: April 12, 2011Assignee: Nalco CompanyInventor: Duy T. Nguyen
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Publication number: 20110082057Abstract: A method for forming a well and pipeline treating fluid is provided. The method comprises combining a cross-linkable gelling polymer, a scavenging compound capable of reducing a concentration of divalent and polyvalent metal ions and salts thereof available for reaction, a hydration solvent and optionally an acid. The resulting mixture has a pH ranging from about 3 to about 7 and a first viscosity. The mixture is maintained at conditions suitable for hydration of the cross-linkable gelling polymer until the mixture has a second viscosity that is greater than the first viscosity. The mixture is combined with an aqueous based fluid and at least one cross-linking agent. The pH of the mixture is raised to a sufficient level to allow a desired degree of cross-linking to occur. Other methods, a well and pipeline treating gel and a well and pipeline treating fluid are also provided.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Inventors: Jinguo ZHANG, Paul H. Javora, Keith W. Sharp
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Publication number: 20110056752Abstract: Embodiments disclosed herein relate to aqueous based wellbore fluids for preventing wellbore fluid loss downhole containing at least one copolymer formed from at least one natural polymer monomer and at least one latex monomer, and an aqueous base fluid.Type: ApplicationFiled: May 4, 2009Publication date: March 10, 2011Applicant: M-I L.L.C.Inventors: Steven Young, Emanuel Stamatakis
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Patent number: 7897545Abstract: Additives that may be useful in preventing fluid loss in certain subterranean formations and associated methods of use are provided. In one embodiment, the methods of the present invention comprise: providing a low molecular weight crosslinkable polymer and a crosslinking agent capable of crosslinking the low molecular weight crosslinkable polymer; and introducing the low molecular weight crosslinkable polymer and the crosslinking agent into at least a portion of a subterranean formation.Type: GrantFiled: August 8, 2008Date of Patent: March 1, 2011Assignee: Halliburton Energy Services, Inc.Inventors: Steve F. Wilson, Jimmie D. Weaver, Karen Savery
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Publication number: 20110034351Abstract: Methods and compositions including a method comprising introducing a hydrophobically and cationically modified relative permeability modifier into a portion of a subterranean formation, wherein the hydrophobically and cationically modified relative permeability modifier comprises a hydrophilic polymer backbone with a hydrophobic modification and a cationic modification.Type: ApplicationFiled: August 10, 2009Publication date: February 10, 2011Inventors: Larry S. Eoff, B. Raghava Reddy, Eldon D. Dalrymple
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Publication number: 20110028356Abstract: An annular fluid or packer fluid, and methods of making the same, that includes a water-miscible solvent, a viscosifying additive, a crosslinking agent, a crosslinking inhibitor having the facility to inhibit crosslinking between the viscosifying additive and the crosslinking agent, and an initiating agent having the facility to overcome an action of the crosslinking inhibitor and to initiate crosslinking between the viscosifying additive and the crosslinking agent, is shown and described. The fluid has a thermal conductivity of no more than about 0.25 btu/(hr·ft·° F.) and a potential to substantially increase its viscosity upon sitting for a selected period of time.Type: ApplicationFiled: October 12, 2010Publication date: February 3, 2011Applicant: M-I L.L.C.Inventors: Andrew G.K. Jones, Bethicia B. Prasek, Robert L. Horton
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Publication number: 20100331222Abstract: Process for producing cellulose beads or lignocellulose beads, wherein cellulose or lignocellulose is dissolved in a solvent which comprises more than 50% by weight of the symmetrical imidazolium compound of the formula I below where R1 and R3 are each an identical organic radical having from 2 to 20 carbon atoms, R2, R4 and R5 are each an H atom, X is an anion and n is 1, 2 or 3, and cellulose beads or lignocellulose beads are produced from the solution obtained, and also the use of the beads obtained for petroleum or natural gas recovery.Type: ApplicationFiled: June 25, 2010Publication date: December 30, 2010Applicant: BASF SEInventors: Markus Braun, Norbert Guentherberg, Michael Lutz, Andrea Magin, Michael Siemer, Vijay Narayanan Swaminathan, Bernhard Linner, Franky Ruslim, Gimmy Alex Fernandez Ramierz
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Publication number: 20100323930Abstract: The use of solid materials based on synthetic polymers and/or biopolymers (A) in natural gas and mineral oil extraction technology. The solid materials are produced by solubilizing at least one synthetic polymer and/or biopolymer (A), or at least one synthetic polymer and/or biopolymer (A) and at least one additive (B), in at least one substantially anhydrous chaotropic liquid (C). The solution or dispersion (AC) or (ABC) is contacted with a liquid (D1) which is miscible with the chaotropic liquid (C), but in which at least the synthetic polymer and/or the biopolymer (A) are substantially insoluble, resulting in a phase (E). The chaotropic liquid (C) is removed from phase (E) to result in a gel (G), which is impregnated with a liquid (D2). The two liquids (D1) and (D2) are removed from the gel (G) by evaporating, producing a solid material based on synthetic polymer and/or biopolymer (A).Type: ApplicationFiled: February 16, 2009Publication date: December 23, 2010Applicant: BASF SEInventors: Simon Champ, Robert Chapman
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Patent number: 7851417Abstract: A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with alkanolamine, then glycerol and water, then with a boron compound. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at temperatures of 275° F. (135° C.) and higher in the formation.Type: GrantFiled: December 11, 2007Date of Patent: December 14, 2010Assignee: E.I. du Pont de Nemours and CompanyInventor: Donald Edward Putzig
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Publication number: 20100252264Abstract: A method of treating a subterranean formation penetrated by a wellbore is accomplished by introducing a fluid into the wellbore containing a combined fluid loss additive and breaker. The combined fluid loss additive and breaker is formed from particles of an organic peroxide provided on a substrate. The particles are sized to facilitate fluid loss control. A treatment operation is carried out wherein a treatment fluid viscosified with a polymer is introduced into the formation through the wellbore.Type: ApplicationFiled: March 24, 2010Publication date: October 7, 2010Inventors: Richard D. Hutchins, Joseph A. Ayoub, Andrey Mirakyan, Micheal D. Parris, Stephen D. Mason, Ann M.W. Hoefer
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Patent number: 7795185Abstract: One example of the many methods provided includes a method comprising: providing a fluid loss control pill that comprises an aqueous base fluid, a cellulose derivative and a dual functional component, the fluid loss control pill having a first viscosity; allowing the dual functional component to interact with the cellulose derivative in the fluid loss control pill such that the viscosity of the fluid loss control pill increases to a second viscosity, the second viscosity being greater than the first viscosity; placing the fluid loss control pill in a subterranean formation; and allowing the dual functional component to interact with the cellulose derivative so as to reduce the second viscosity of the fluid loss control pill to a third viscosity, the third viscosity being less than the second viscosity.Type: GrantFiled: July 27, 2006Date of Patent: September 14, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Bradley L. Todd, Karen Savery
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Patent number: 7795190Abstract: A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with alkanolamine, then water and optionally and preferably a hydroxyalkylene diamine, then with a boron compound. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at temperatures of 275° F. (135° C.) and higher in the formation.Type: GrantFiled: December 14, 2007Date of Patent: September 14, 2010Inventor: Donald Edward Putzig
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Patent number: 7795186Abstract: Provided herein are methods and compositions for generating acids for use downhole, for example, to break fluid-loss control pills. The delayed-release acid breakers of the present invention comprise orthoesters and/or poly(orthoesters).Type: GrantFiled: June 22, 2009Date of Patent: September 14, 2010Assignee: Halliburton Energy Services, Inc.Inventors: Rajesh K. Saini, Karen Savery, Bradley L. Todd
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Patent number: 7790657Abstract: A process to prepare a stable solution of a borozirconate complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting zirconium complex with a first alkanolamine, then water and optionally hydroxyalkylene diamine, then with a solution of a boron compound and a second alkanolamine. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at temperatures of 275° F. (135° C.) and higher in the formation.Type: GrantFiled: December 17, 2007Date of Patent: September 7, 2010Inventor: Donald Edward Putzig
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Patent number: 7781380Abstract: Disclosed are methods of treating subterranean formations with rapidly hydratable treatment fluids based upon heteropolysaccharides. In particular, the invention relates to treatment methods with fluids containing a heteropolysaccharide, aqueous medium, and an electrolyte, wherein the fluids may further include a gas component, a surfactant and/or an organoamino compound. The fluids exhibit good rheological properties at elevated temperatures, and unusually rapid hydration rates which allows utilizing such fluids without the need of hydration tanks.Type: GrantFiled: January 25, 2006Date of Patent: August 24, 2010Assignee: Schlumberger Technology CorporationInventors: Lijun Lin, Alejandro Pena, Golchehreh Salamat